Convert Inches per Minute to Mach 1
Convert Inches per Minute (in/min) to Mach 1 (Ma) instantly and accurately.
Conversion Formula
Ma = in/min × 1.244036949e-6
About Inches per Minute
An inch per minute (in/min) ≈ 0.4233 mm/s - the standard North American machining feed unit for slow precision cuts. CNC milling in titanium or nickel superalloys: HSS roughing 2-8 in/min; carbide finishing 15-40 in/min. Thread-tapping feeds are calculated in in/min from pitch × RPM. Hydraulic press platen closure for rubber moulding and laminate pressing: 0.05-2 in/min. 1 in/min = 0.0254 m/min ≈ 4.233 × 10⁻⁴ m/s.
About Mach 1
Mach 1 = the speed of sound in dry air at ISA sea-level (15°C, 101.325 kPa) = exactly 340.29 m/s (1,225 km/h; 761 mph). Chuck Yeager first exceeded it on 14 October 1947 in the Bell X-1. At 35,000 ft cruise altitude (−56.5°C), it falls to 295.1 m/s. Flight regimes: subsonic
Quick Reference Table
| Inches per Minute (in/min) | Mach 1 (Ma) |
|---|---|
| 1 in/min | 1.244 × 10-6 Ma |
| 2 in/min | 2.488 × 10-6 Ma |
| 5 in/min | 6.22 × 10-6 Ma |
| 10 in/min | 1.244 × 10-5 Ma |
| 25 in/min | 3.11 × 10-5 Ma |
| 50 in/min | 6.22 × 10-5 Ma |
| 100 in/min | 0.000124404 Ma |